390 Messrs. Playfair and Letouraeux on the 



13. Cyprinodon iherus. 

 Cyprinodon iherus, Cuv. & Val. xviii. p. 100, pi. 528; Steind. Sitzgsber. 

 Akad. Wiss. Wien, lii. I860, f. 1-3 ; Gunth. Fish. vi. p. 302, 



D. 9 ; A. 9 ; L. lat. 30 ; L. transv. 9/10. 



We cannot hesitate to separate this species from the fore- 

 going. Of G. calaritanus we have examined several hundred 

 specimens without discovering any appreciable difference from 

 tlie description of Dr. Giinther. But we liave received from 

 tlic spring of Taguin two males, the lengths of which are 2^ 

 and 3^ centimetres respectively, which correspond Avith 

 Valenciennes's description and figure quite sufficiently for 

 identification with them. 



In general appearance they resemble more nearly the female 

 than the male of C. calaritanus ; but they differ from both sexes 

 of that fish in the number of scales on the lateral line, which 

 are in 30 series. 



The height of the body is ^ of the total lengtli without 

 caudal ; the length of the head is contained 3^ times in the 

 same. Diameter of eye rather more than length of snout, and 

 equal to half the breadth of the interorbital space ; it is one- 

 third of the length of the head. Dorsal and anal as much 

 elevated as in the female of G. calaritanus, but less than in 

 the male of that species. 



The first dorsal ray is inserted midway between the root of 

 the caudal and the gill-opening, and corresponds to the twelfth 

 scale of the lateral line. The first anal ray is below the second 

 or third of the dorsal. Caudal truncated. 



Golour : greenish-olive, minutely spotted Avith black ; about 

 eighteen narrow silvery cross bands on the sides ; dorsal, anal, 

 and caudal Avith Aery distinct black cross bands. 



Hah. Taguin, in the High Plateaux of the province of 

 Algiers. Spain. 



14. TeUia apoda. 



Tellia apoda, Gerv-ais, Ann. Sc. Nat. 1853, t. xix. p. 15, and Zool. et Pal. 

 G^n. pi. xlv. f. 0; Yal. Coiupt. Rend. 1858, xlvi. p. 715: Giinth. Fish, 

 vi. p. 301). 



D. 13-15; A. 13-14, L. lat. 26-28; L. transv. 11. 



The genus Tellia^ is A^ery similar to G>/prinodon, but has 

 no ventral fins ; the mouth is protractile, the loAver jaA\- j)ro- 

 jccts beyond the upper, the teeth are tricuspid in a single 

 series in eacli jaAA''. 



The height of the body in females is about ^, and in males 

 somcAA'hat less than ^ of the total length ; the length of the 

 head is contained about 3^ times in the same. The diameter 



* So called, perhaps, because it has never been iVniiul in tlie Tell, but 

 only on the lliuh I'lateaux. 



